SETUP: Grab some dumbbells and a flat bench. I like to be more diagonal on this one. Before you perform a rep, be sure to pin your shoulder blades back to maintain great posture.
REP: Brace your midsection by squeezing your glutes and driving your feet into the ground, then press the dumbbells above your chest, just as you would on a regular Bench Press. This is where things get interesting… Keeping one weight loaded in the start position, begin lowering the other dumbbell until it reaches just outside your chest (no need to go any lower!) then press the weight back up. Now repeat for the other side.
TIP: Ensure the non-working side is actually switched on the whole time by maintaining your posture. Keep your shoulders back & chest up!